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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






2. Help to signal hormone levels which we need both in the brain right next to each other.






3. 114 days






4. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






5. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






6. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






7. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






8. (LH) stimulates the Leydig cells to produce testosterone






9. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






10. ~305 days (altough often longer due to breeding difficulties)






11. What makes the milk flow through the mammary glands?






12. 24 hours before end of estrus cycle






13. (switzerland) 2nd in size and milk production - most muscle -






14. Help to signal hormone levels which we need both in the brain right next to each other.






15. 16-20 hours






16. What about the sperm for a bull which has been castrated but still has testicles?






17. Can survive ~7 days in cow. vast majority <48 hours






18. Larger the cow - more milk is produced; smaller the cow - less milk is produced






19. 45-60 days after breeding; re-breed as required






20. Depository for semen during insemination. where urine leaves the body






21. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






23. 10-37 (21) days






24. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






25. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






26. Milk is 15% ________ and 85% __________.






27. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






28. (LH) causes female's egg to break (her period)






29. 147 days






30. 16-20 hours






31. Milk ~305 days - dry 60 days prior to calving






32. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






33. Duct through penis that carries sperm and urine






34. ~60 days before calving






35. Look for infection - split - and rupture of the penis






36. 30-38 hours after estrus cycle begins






37. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






38. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






39. Way to know everything is alright with the breeding male






40. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






41. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






42. What about the sperm for a bull which has been castrated but still has testicles?






43. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






44. When are steers and heifers weaned from bottle feeding?






45. Urinary calculi.






46. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






47. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






48. (male) pushes the testes outward toward the legs for a cool-down off of the body






49. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






50. 4-6 days